SEATTLE (AP) — A U.S. judge on Thursday blocked Postal Service changes that have slowed mail nationwide, calling them “a politically motivated attack on the efficiency of the Postal Service” before the November election.

Judge Stanley Bastian in Yakima, Washington, said he was issuing a nationwide preliminary injunction sought by 14 states that sued the Trump administration and the U.S. Postal Service.

The states challenged the Postal Service’s so-called “leave behind” policy, where trucks have been leaving postal facilities on time regardless of whether there is more mail to load. They also sought to force the Postal Service to treat election mail as first class mail.

The judge noted after a hearing that Trump had repeatedly attacked voting by mail by making claims that it is rife with fraud. Many more voters are expected to vote by mail this November because of the COVID-19 pandemic, and the states have expressed concern that delays might result in voters not receiving ballots or registration forms in time.

“The states have demonstrated the defendants are involved in a politically motivated attack on the efficiency of the Postal Service,” Bastian said.

He also said the changes created “a substantial possibility many voters will be disenfranchised.”

Bastian, an appointee of former President Barack Obama, issued a written order later Thursday that closely tracked the relief sought by the states. It ordered the Postal Service to stop implementing the “leave behind” policy, to treat all election mail as first class mail rather than as slower-moving categories, to reinstall any mail processing machines needed to ensure the prompt handling of election mail, and to inform its employees about the requirements of his injunction.

Postal Service spokesman Dave Partenheimer said the organization is reviewing its legal options, but “there should be no doubt that the Postal Service is ready and committed to handle whatever volume of election mail it receives.”

Lee Moak, a member of the USPS Board of Governors, called the notion any changes were politically motivated “completely and utterly without merit.”

Following a national uproar, Postmaster General Louis DeJoy announced he was suspending some changes — including the removal of iconic blue mailboxes in many cities and the decommissioning of mail processing machines.

But other changes remained in place, and the states — including the battlegrounds of Michigan, Wisconsin and Nevada — asked the court to block them. Led by Washington Attorney General Bob Ferguson, the states said the Postal Service made the changes without first bringing them to the Postal Regulatory Commission for public comment and an advisory opinion, as required by federal law. They also said the changes interfered with their constitutional authority to administer their elections.